How do you combine like terms in (5x ^ { 4} + 6x ^ { 3} - 9) - ( 8x ^ { 2} - 6x + 7)(5x4+6x39)(8x26x+7)?

2 Answers
Apr 5, 2017

See the entire solution process below:

Explanation:

First, remove all of the terms from parenthesis. Be careful to handle the signs of each individual term correctly:

5x^4 + 6x^3 - 9 - 8x^2 - 6x - 75x4+6x398x26x7

Next, group like terms:

5x^4 + 6x^3 - 8x^2 - 6x - 9 - 75x4+6x38x26x97

Now, combine like terms:

5x^4 + 6x^3 - 8x^2 - 6x - 165x4+6x38x26x16

Apr 5, 2017

5x^4+6x^3-8x^2+6x-165x4+6x38x2+6x16

Explanation:

5x^45x4 is alone, so it is just that. 6x^36x3 is also alone, so nothing to change. 8x^28x2 is also alone, so it is 8x^28x2. then it is something minus negative 6x6x then -9-7=-1697=16.